CEN TS 15119-2-2012 Durability of wood and wood-based products - Determination of emissions from preservative treated wood to the environment - Part 2 Wooden commodities exposed in.pdf

《CEN TS 15119-2-2012 Durability of wood and wood-based products - Determination of emissions from preservative treated wood to the environment - Part 2 Wooden commodities exposed in.pdf》由会员分享，可在线阅读，更多相关《CEN TS 15119-2-2012 Durability of wood and wood-based products - Determination of emissions from preservative treated wood to the environment - Part 2 Wooden commodities exposed in.pdf（22页珍藏版）》请在麦多课文档分享上搜索。

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationPD CEN/TS 15119-2:2012Durability of wood andwood-based products Determination of emissionsfrom preservative treatedwood to the environmentPart 2: Wooden commodities exposedin Use

2、 Class 4 or 5 (in contact with theground, fresh water or sea water) Laboratory methodPD CEN/TS 15119-2:2012 PUBLISHED DOCUMENTNational forewordThis Published Document is the UK implementation of CEN/TS15119-2:2012. It supersedes DD CEN/TS 15119-2:2008 which iswithdrawn.The UK participation in its pr

3、eparation was entrusted to TechnicalCommittee B/515, Wood preservation.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplica

4、tion. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 77805 6ICS 13.020.30; 71.100.50Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strat

5、egy Committee on 31 October 2012.Amendments issued since publicationDate Text affectedPD CEN/TS 15119-2:2012TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 15119-2 October 2012 ICS 13.020.30; 71.100.50 Supersedes CEN/TR 15119:2005, CEN/TS 15119-2:2008English Version Du

6、rability of wood and wood-based products - Determination of emissions from preservative treated wood to the environment - Part 2: Wooden commodities exposed in Use Class 4 or 5 (in contact with the ground, fresh water or sea water) - Laboratory method Durabilit du bois et des matriaux base de bois -

7、 Estimation des missions dans lenvironnement du bois trait avec des produits de prservation - Partie 2 : Articles en bois exposs en classe demploi 4 ou 5 (en contact avec le sol, leau douce ou leau de mer) - Mthode de laboratoire Dauerhaftigkeit von Holz und Holzprodukten - Abschtzung von Emissionen

8、 von mit Holzschutzmitteln behandeltem Holz an die Umwelt - Teil 2: Holzprodukte in Gebrauchsklasse 4 und 5 (im Kontakt mit Erde, Swasser oder Meerwasser) - Laborverfahren This Technical Specification (CEN/TS) was approved by CEN on 30 July 2012 for provisional application. The period of validity of

9、 this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same wa

10、y as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are

11、 the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Rom

12、ania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means

13、reserved worldwide for CEN national Members. Ref. No. CEN/TS 15119-2:2012: EPD CEN/TS 15119-2:2012CEN/TS 15119-2:2012 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Description of the test method .5 2.1 General considerations .5 2.2 Principle 5 2.3 Quality criteria 5 2.3.1 Accuracy .5 2.

14、3.2 Reproducibility .6 2.4 Product and reagent 6 2.4.1 Water .6 2.4.2 Seawater .6 2.4.3 Preservative 6 2.5 Apparatus .6 2.5.1 Immersion container .6 2.5.2 Assembly for test specimens .6 2.6 Test specimens 7 2.6.1 Species of wood.7 2.6.2 Quality of wood and wood moisture content 7 2.6.3 Size of test

15、specimens 7 2.6.4 Number of test specimens 7 2.6.5 End seal 7 2.7 Procedure .7 2.7.1 General 7 2.7.2 Preparation of the treated test specimens 8 2.7.3 Conditioning of the test specimens after treatment 8 2.7.4 Preparation and selection of test specimens .8 2.7.5 Immersion method .8 2.8 Expressions o

16、f results 9 2.8.1 Chemical analysis 9 2.8.2 Bulked samples9 2.8.3 Emission flux 9 2.8.4 Recording 10 2.9 Evaluation of the results in the different environmental compartments 10 2.9.1 Soil . 10 2.9.2 Fresh water and sea water . 10 3 Test report . 10 Annex A (informative) Recording forms 12 Annex B (

17、informative) General recommendations 16 Bibliography . 17 PD CEN/TS 15119-2:2012CEN/TS 15119-2:2012 (E) 3 Foreword This document (CEN/TS 15119-2:2012) has been prepared by Technical Committee CEN/TC 38 “Durability of wood and wood-based products”, the secretariat of which is held by AFNOR. Attention

18、 is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document will supersede CEN/TR 15119:2005 and CEN/TS 15119-2:2008. CEN/TS 15119 is compose

19、d of the following parts: Part 1: Wood held in the storage yard after treatment and wooden commodities exposed in Use Class 3 (not covered, not in contact with the ground) Laboratory method; Part 2: Wooden commodities exposed in Use Class 4 or 5 (in contact with the ground, fresh water or sea water)

20、 Laboratory method. This document is a revision of Technical Specification published in 2008 in order to consider the OECD 313 which covers the same topic. Compared to CEN/TS 15119-2:2008 the following modifications have been made: a) quality criteria for accuracy and reproducibility added in 2.3; b

21、) provisions for properties of the sea water used for the test added in 2.4.2; c) procedure for sealing of end grain specified in more detail in 2.7.2; d) in 2.7.5.2 time intervals for replacement of the water specified and total testing time increased from 19 days to 29 days; e) reference to extrap

22、olation of results to 1 year or 10 years deleted; f) recording forms in Annex A modified; g) Annex B for general recommendations added; h) Bibliography extended. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to announce t

23、his Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,

24、 Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 15119-2:2012CEN/TS 15119-2:2012 (E) 4 Introduction The emissions from preservative treated wood to the environment need to be quantified to enable an environmental risk assessment of the treated wood. This docu

25、ment describes a laboratory method for the estimation of emissions from preservative treated wood in the case where the preservative treated wood is not covered by a physical protection and is in contact with the ground, fresh water or seawater. There are three situations in this case where emission

26、s could enter the environment: a) emissions from treated wood in contact with the ground. Use Class 4A. Emissions from the surface of the treated wood could enter the soil via the soil water; b) emissions from treated wood in contact with fresh water. Use Class 4B. Emissions from the surface of the

27、treated wood could enter the water; c) emissions from treated wood in contact with sea water. Use Class 5. Emissions from the surface of the treated wood could enter the sea. The method is a laboratory procedure for obtaining water samples (leachate) from treated wood in contact with water, at incre

28、asing time intervals (complete duration of 29 days). The quantities of emissions in the leachate are related to the surface area of the wood and the length of exposure, to estimate a flux in milligrams per square metre per day. The quantity of emissions can be used in an environmental risk assessmen

29、t of the treated wood. PD CEN/TS 15119-2:2012CEN/TS 15119-2:2012 (E) 5 1 Scope This Technical Specification specifies a laboratory method for obtaining water samples from treated wood which has been in conditions designated to simulate continuous contact with the ground or with water (use Class 4 or

30、 5), at time intervals after exposure. 2 Description of the test method 2.1 General considerations The principal agent for causing emissions from wood exposed to soil is the soil water. The mechanism of leaching at the wood surface by the soil water is assumed to be identical in nature and severity

31、to leaching from a wood surface in continuous contact with water. The mechanism of leaching at the wood surface by fresh water is assumed to be identical in nature and severity to leaching from a wood surface by seawater. The wood, in the case of wood treated with a wood preservative, shall be repre

32、sentative of commercially used wood. It shall be treated in accordance with the preservative manufacturers instructions and in compliance with appropriate standards and specifications. The parameters for the post-treatment conditioning of the wood prior to the commencement of the test shall be state

33、d. The composition, amount and pH value of the water used in the test are important in determining the quantity, content and nature of emissions from wood. 2.2 Principle Water samples are collected after continuous contact with treated wood at increasing time intervals. To simulate the emission of w

34、ood preservatives from wood that is exposed to continuous contact with water test specimens are immersed in water and samples of the water are collected at different intervals. The volume of water relative to the surface area exposed to the water is equivalent to the ratio found in wood exposed in s

35、ervice in some Use Class 4 situations (1 m3per 40 m2or 25 l per m2). The water (leachate) is collected and is chemically analysed at seven or more sample times over the 29 days; it is suitable for ecotoxicity testing. Emission rates in milligrams per square metre per day are calculated from analytic

36、al results. The sampling periods are recorded. Tests with untreated samples can be discontinued if there is no background detected in the first three data points. 2.3 Quality criteria 2.3.1 Accuracy The performance of the analytical method should be determined before conducting the test: 1) Accuracy

37、; 2) Specificity; 3) Limit of detection; 4) Limit of quantification. The testing is carried out with untreated references and with controlled water. PD CEN/TS 15119-2:2012CEN/TS 15119-2:2012 (E) 6 2.3.2 Reproducibility Two water samples are collected and analysed and the mean value is taken as the e

38、mission value. The reproducibility of the results within one laboratory and between different laboratories depends upon the immersion regime and the wood used as test specimens. 2.4 Product and reagent 2.4.1 Water Fresh water and soil leaching scenarios: Water complying with grade 3 of EN ISO 3696 o

39、r water especially designed for environmental investigations is ideal. Deionised water can also be used. The pH value shall normally be in the range 5 to 7. The pH value shall not be adjusted unless special conditions might justify setting the pH to a specified value between 5 and 7. Water temperatu

40、re shall be (20 2) C. The pH value and water temperature shall be stated in the test report. 2.4.2 Seawater Seawater leaching scenarios: Synthetic seawater (e.g., ASTM D 1141 Substitute Ocean Water, without Heavy Metals) is recommended for use in the leaching test when wood exposed to seawater is to

41、 be evaluated. The water temperature shall be (20 2) C and the measured pH and water temperature included in the test report. 2.4.3 Preservative The identity of the preservative product used to treat the wood samples shall be stated in the test report. It shall state the name and other designation o

42、f the preservative, and the trade or common name of the active ingredient(s), substances of concern (as defined in the EU Directive 98/8/EC) or a generic description of co-formulates and the composition expressed in terms of the mass fraction of each of the ingredients. 2.5 Apparatus 2.5.1 Immersion

43、 container The container shall be made of a material that is inert to water and the treated timber and large enough to allow the test specimens to have all their faces exposed to water and to contain sufficient water for the ratio of the exposed surface area of the test specimen to the volume of wat

44、er to which it is exposed, to be 40 (i.e. 40 m2 m-3or 0,4 cm2 cm-3). The volume of water required is therefore 25 l per m2of exposed surface area of the test specimen (this is equivalent to 2,5 cm3per cm2). EXAMPLE For example, for five wood test specimens 25 mm wide by 50 mm long, 15 mm thick, end

45、sealed, where the surface area exposed to water is 200 cm2the volume of water required is 500 ml. The container is covered in order to avoid water evaporations. 2.5.2 Assembly for test specimens No equipment used to hold the test specimens below the level of the water shall be made of a material tha

46、t will react with the water or the treated timber. The test samples should be restrained in a test frame which allows all 5 test specimens to be manoeuvred simultaneously and which allows free access of water to all surfaces. PD CEN/TS 15119-2:2012CEN/TS 15119-2:2012 (E) 7 2.6 Test specimens 2.6.1 S

47、pecies of wood The wood species shall be typical of the wood species used for the efficacy testing of wood preservatives e.g. Pinus sylvestris (Linnaeus) (Scots pine). Additional tests may be made using other species but, if so, this should be stated in the test report. 2.6.2 Quality of wood and woo

48、d moisture content Use straight grained wood without knots. Material of a resinous appearance shall be avoided. The wood should be typical of wood that is available commercially. The source, density with a defined humidity and number of annual growth rings per 10 mm shall be stated in the test repor

49、t. Regarding the moisture content before the treatment, the recommendations of the wood preservative manufacturer should be followed. 2.6.3 Size of test specimens Wood test specimens have minimum dimensions of 25 mm wide by 50 mm in length, 15 mm thick, with the longitudinal faces parallel to the grain of the wood. Test specimens shall consist of 100 % sapwood. Each test specimen is marked so that it can be identified throughout the test. The wood test specimens shall be plain sawn and the surfaces shall not be sanded. 2.6.4 Number of test specimen